In order to analyze the distribution characteristics of thunderstorms in Chenzhou area under the El Ni1 o phenomenon

the monthly trend of the flash frequency in Chenzhou area and the development trend of the severe convective weather thunderstorm process in the pre and post-flood season are summarized with the samples of the lightning location data in the past five years. This paper analyzes the characteristics of the probability distribution of the lightning current amplitude during the pre/post flood season in Chenzhou under the El Nino Phenomenon in 2016. The results show that the El Ni1 o phenomenon has a great impact on the thunderstorms in the pre-flood season

and the thunderstorms in the previous flood season have increased significantly and surpassed that of previous years. The research shows that the El Nino Phenomenon has a great impact on the thunderstorms in pre-flood season and makes a significant increase of the pre-flood season thunderbolt number even and surpassed that of previous years.